Help! Flowering possible burn + powder mildew (PICS)

[bubblegum2]

I had some mothers that were pretty old that i started flowering a couple weeks ago. The now have seemed to developed a mildew problem but my humidity has been relatively high because the de-humidifier broke and it is generally high where i am located. The leaves have also started to burn/turn a shade of brown. I thought at first it was a deficiency but realized my temperature gauge had fallen so id been adjusting my fan to low when the heat was higher then i thought in my tent. A friend has some anti mildew/fungus spray for me that im going to try, but whats your two cents on the matter thanks in advance.

What they started as:

How they are now:

Mildew Closeup:

Burn Closeup:

 

[Neo 420]

On the powder midlew (PM) :

Do you have ventilation in your closet? (That may help fix both issues) Explain your setup with more detail (particularly environmental) That pm looks like it has thoroughly penetrated the ladies. Maybe try Serenade? I'm not trying to be a smart @ss, but if you pay attention to the ladies you can see issues like this arriving and have a better outcome with the solution. In this case if you do recover (I am sure you will), you provide less stress and less downtime with the plant recovering.

On the burns:

I can not tell if that burn or what with the pic quality.

 

[bubblegum2]

Neo, thanks ill upload a better picture of the potential burn later tonight. There currently in a growlab60 2x2x5'3" plenty of airflow this time through with a 4 inch inline duct fan as primary intake, a pc fac as a secondary intake for shits and giggles and it is all been exhausted through a 4 inch carbon filter through the aircooled 400w hps and out the 4 inch centrifugal that i have hooked to a speed controller that i have had set to low since i just found out about the temp gauge falling down.

Pic will be added asap, school is swamping me.

 

[Neo 420]

Just another tip for you..

Having adequate ventilation (no dead spots) is also necessary. When I grew in a cabinet I had the proper CFM's but I had dead zones and the PM would take off every cycle. I had to reposition intakes and exhausts and even add a small fan inside to control and stop my outbreaks.

 

[Go-Zania!]

I am currently in a growlab120 and just recovered from a mild case of PM. It wasn't that bad and I know what caused it (Humidifier left on too long RH got to 71%). I use Dutch Master Zone to keep my root zone in check (DWC) and you can use it as a foliar spray to eliminate PM problems.

Here are the instructions on how to use Zone as a foliar.

Solving Powdery Mildew Issues
ZONE can be used a s a foliar spray to rid your plants of powdery mildew. Often only one application is needed to cure your plant of its mildew problem. In about 2-3 days your plants should be rid of that nasty white residue. The following foliar dosage recommendation for treating powdery mildew problems is safe and gentle enough to be used as a preventative measure on a continuous basis to stoop mildew before it starts.

Instructons-Powedery Mildew
To RID or PREVENT powdery mildew and 1 Tablespoon of ZONE AND 1 Tablespoon +1 teaspoon of Penetrator to 1 quart of water and Spot treat plants on infected leaves.

 

[bubblegum2]

 

[Neo 420]

Ok. Someone step right in if I'm wrong but when I have seen leaves burnt by light, the affected areas usually lighter. How close did you have the bulb to the plants? I could see dark areas develop like that if you put the bulb directly over the leaf. If that is indeed light burn, you would cut the affected area's. Not the whole leaf. Just the burnt area's. But I do not know if that if light burn. Is the burnt area crunchy?

 

[bubblegum2]

update: they spray my friend had happened to be serenade, i lucked out. Sparyed them 5 minutes ago.

I have to run to a test but ill answer your questions when i get back Neo

 

[bubblegum2]

@Neo

The bulb is more then 6 inches from the top of the plants maybe even 8, i could lower it but i pulled it up when i was trying to fix my problem. The area affected isn't crunchy and might be discolored because a mix of deficiency and higher temps?


The serenade works wonders gave them a spray and got rid of almost all the mildew, could be touched up in a few more areas but looking 100x better. Fair warning tho that shit smells like assss and will vent out into your room making it smell like ass.

My landlord came by for inspection yesterday so i tore apart my vegging closet and now have my 4 plant bubble bucket squished in there. Its packed now.

 

[hazydays]

Hey, why not take pics with the hps off so we can see what's up?

You got something else going on too. better pics will help. I'm going to guess that the pH in your medium is low. Causing that curl on top.

 

[christen23]

Instructons-Powedery Mildew
To RID or PREVENT powdery mildew and 1 Tablespoon of ZONE AND 1 Tablespoon +1 teaspoon of Penetrator to 1 quart of water and Spot treat plants on infected leaves.

^^This will work peace
~POE~

 

[Neo 420]

What is your canopy temp? I really do not believe that is burn.